Minimal Velocities Necessary for Perforation of Skin by Air Gun Pellets and Bullets

    Volume 27, Issue 4 (October 1982)

    ISSN: 0022-1198

    CODEN: JFSOAD

    Published Online: 1 October 1982

    Page Count: 5


    Copeland, AR
    Pathologist, Oklahoma City, OK

    Jones, A
    Firearms examiners, Dallas, TX

    Fletcher, LA
    Firearms examiners, Dallas, TX

    Besant-Matthews, PE
    Medical examiner, Dallas County, Dallas, TX

    DiMaio, VJM
    Chief medical examiner, Bexar County, San Antonio, TX

    (Received 1 March 1982; accepted 19 March 1982)

    Abstract

    A series of tests were conducted to determine the velocities necessary for lead air gun pellets (calibers .177 and .22) and caliber .38 lead bullets to perforate skin. Human lower extremities were used. Caliber .177 air gun pellets weighing 8.25 grains required a minimum velocity of 101 m/s (331 ft/s) to perforate skin. The energy per area of presentation ratio E/a was 1:86 m∙kg/cm2. Caliber .22 air gun pellets weighing 16.5 grains needed a minimum velocity of 75 m/s (245 ft/s). The E/a was 1:3 m∙kg/cm2. A round nose, caliber .38 lead bullet weighing 113 grains perforated skin at 58 m/s (191 ft/s). The E/a was 1.95 m∙kg/cm 2. These studies appear to indicate that lightweight projectiles need greater velocity to perforate skin than do larger caliber, heavier bullets.


    Paper ID: JFS12207J

    DOI: 10.1520/JFS12207J

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    Author
    Title Minimal Velocities Necessary for Perforation of Skin by Air Gun Pellets and Bullets
    Symposium , 0000-00-00
    Committee E30